Can I Put My Glasses Through the Business? Here's the Honest Answer

A client asked me this the other day, and I suspect a lot of people quietly wonder the same thing:

"Random question — if I get my eyes tested and new glasses for computer work, can I put that through the business?"

It's a good question, and the honest answer is more interesting than a flat yes or no. It comes in two halves: the eye test, which is usually fine, and the glasses, which usually aren't. Here's why.

The eye test: an easy yes

If you run your business through a limited company and you regularly work at a screen, the company can pay for your eye test, and it's completely tax-free. No benefit-in-kind, no entry on a P11D, no complication.

This comes from the health and safety rules around screen work: if you're a display-screen user, you're entitled to an eye test, and the cost of providing it is specifically exempt from tax. (The one condition worth knowing is that the company should make this available to its screen-using staff generally, rather than cherry-picking it for one person. If you're the only one, that's easily met.)

So if the only thing you take from this post is "book the eye test and put it through the company," that part's genuinely simple.

The glasses: where it gets misunderstood

This is where people get caught out, because the instinctive assumption is "if I need glasses for work, the business pays." Unfortunately tax rarely works on instinct.

The company can only cover your glasses tax-free in one specific situation: where the eye test shows you need a special prescription purely for screen distance — glasses you'd use only at the computer and wouldn't otherwise need.

If, on the other hand, you come away with a normal prescription you'll also wear for reading, driving, or just getting through the day (which is how it usually goes), they don't qualify. The reason is a principle that runs right through tax: a cost has to be wholly and exclusively for the business. A pair of glasses you wear for life as well as work has a dual purpose, so it fails the test.

And there's a sting if you put them through anyway. Glasses that don't qualify become a taxable benefit-in-kind — which means extra tax for you, employer's National Insurance for the company, and a reporting job at the year end. You'd typically end up worse off than if you'd just bought them yourself.

So when do glasses qualify?

Less often than people hope, so it's worth being straight about it.

A qualifying pair means a prescription written solely for the screen — corrected for the intermediate distance a monitor sits at, and genuinely no use for anything else. The textbook case is someone (often in their forties or beyond) whose distance vision is fine, but who needs a dedicated pair of single-vision "computer glasses" set to that middle distance. Those would be useless for driving or reading a book, so they're genuinely work-only, and they can go through the company.

The far more common outcome is a general or varifocal prescription that handles the screen and everything else. Useful glasses, but not exclusive to work, so not claimable.

Two more things worth knowing even when a pair does qualify: the company covers a basic pair adequate for the job, not designer frames or upgrades (those bits are personal), and it only ever applies to glasses, never to the screen-distance element of a multi-purpose pair you'd have bought anyway.

What if you're a sole trader?

Different rules, and generally a harder no. The tax-free eye-test treatment above is an employment exemption, so it applies to you as a director of your company, not to a self-employed sole trader.

As a sole trader you're back on the "wholly and exclusively" test, and because you need your eyes for your whole life and not just your work, HMRC will usually treat eye tests and glasses as having a dual purpose and disallow them. There can be narrow exceptions, but the default position is that they're a personal cost. If you're a sole trader and unsure, it's worth checking your specific situation rather than assuming.

The bottom line

For my client, and for most people running a limited company, the practical answer is this:

Book the eye test and let the company pay for it. Then see what the optician actually recommends. If it's a dedicated pair purely for screen use, the basic cost of those can go through the company tax-free. If it's a normal prescription you'll wear day to day, keep it personal, because putting it through the company just lands you with a benefit-in-kind you didn't want.

Not the "stick it all through the business" answer people are hoping for, but it's the one that keeps you on the right side of the line — and that's worth more than a small saving that turns into a tax bill later.